Theorem 3.1 
The q-analog of the Chu-Vandermonde identity [1]}:
\(\sum _{k=0}^n q^{(a-k)(n-k)} \genfrac(){0.0pt}{}{a}{k}_{\textstyle q} \genfrac(){0.0pt}{}{b}{n-k}_{\textstyle q} = \genfrac(){0.0pt}{}{a+b}{n}_{\textstyle q}\) 

